Hypertherm Powermax30 AIR - Page 74

74 Powermax30 AIR Service Manual 808850
5 – Troubleshooting and System Tests
Figure 6 – Back of the power board
WARNING!
Voltages of up to 50 VDC continue to be present on the DC bus for at least 30 seconds after
disconnecting the input power. Allow bus voltages to dissipate before performing any tests.
WORK LEAD (BLK)
AC AC
R
w
TORCH
START
BLK
BLK
B
TORCH
START
1
2
4
3
2
2
1
2
11
12
13
5
6
7
8 9
1 0
1
Retaining screw (2)
2
Heatsink assembly screw (4)
3
Torch start and cap-sensor (J12)
4
J13
5
J14
6
J15
7
Work lead connector (J22)
8
J21
9
J20
10
J19
11
J18
12
Input diode bridge screws (2)
13
IGBT screws (3)